Preheat oven to 275F. Lay short ribs in a single layer in a casserole dish or 9x13" pan with high sides (there will be quite a bit of grease that is released so you don't want it to spill over the sides)
Season the beef on the top and cover the top of the pan tightly with 2 sheets of aluminum foil.
Bake for 4 hours. Transfer pieces with a metal spatula to a new sheet pan covered with foil in a single layer. Switch oven to broil low. Add a layer of bbq sauce to top of each short rib and serve immediately.